Valve



5 SheetsSheet 1. F. TUDOR.

(No Model.)

VALVE.

No. 319,939. Patented June 9,. 1885.

jiwwzir:

u. PETERS. Pholn-Liihngnpher. WuhIr-glam o. c.

(No Model.) 5 Sheets-Sheet 3.. F. TUDOR.

VALVE.

z$aiasiai W (-No Model.) 5 Sheets-Sheet 4. F. TUDOR.

. VALVE.

- No. 319,939. Patented'June 9, 1885.

(No Model.) 5Sheets8heet 5.

I P. TUDOR.

VALVE.

No. 319,939. Patented June 9, 1885 N. PETERS. Phob-Lhhngrlphor.Wuhingwn. C.

UNITE FREDERIG TUDOR, OF BOSTON, MASSACHUSETTS.

VALVE.

GI GIPICATEON forming part of Letters Patent N0. 319,939, dated June 9,1885.

Application filed March 1, 1884. (No niodeld T 0 all whom it mayconcern.-

Be it known that l, FREDERIO TUDOR, of Boston, in the county of Suffolkand State of Massachusetts, have invented certain new and usefulImprovements in Valves, of which the following is a specification.

The invention relates to regulatable valves or cooks for regulating thefeed of fluids from the source of supply to the points where they areused or consumed.

My invention applies more especially to steam-supply valves forconnection with radiators or heating apparatuses, and it aims to providevalves for this purpose which will possess the following advantages:First, an adjustability of the internal supply orifice or way, adaptedto the condensing capacity of the radiator to which the valve connects,whereby only a determined quantity of steam can pass at a certainpressure, so that when the valve is opened to its maximum only the truemaximum quantity. of steam can enter the radiator without anyappreciable excess; second. a means for graduating the flow of steam byregulating the distance which the operating handle can be moved, so asto reduce the flow to any desired degree between maximum and minimum,and thereby enable the heat in the radiator to be regulated as desired;third, means whereby steam may be admitted to the radiators, even afterthe manual regulatable valves have been closed,by simply increasing thesteanrpressure, and thereby forcing a circulation of steam through theheating apparatus to keep the apartments from becoming too cool duringthe times when the occupants are absent therefrom.

The latter object is accomplished by means shown and described in aformer patent issued to me January 8, 1884, No. 291,818, on which mypresent invention is partly an improvement, and the other features of mypresentinvention are in part supplemental to the improvements shown inmy application No. 117,923, filed January 18, 1884.

In carrying out my invention, therefore, I render the internalsupply-orifice or steam way of the valve adjustable in area, preferablyby means of an adjustable perforated sleeve controlling the way, withmeans for fastening said sleeve at the desired adjustment, and incombination with this featurel employ a valve disk or stopper, which isarranged to have a limited movement between stops which represent thezero and the maximum of opening, and I graduate the range between saidpoints, whereby any desired flowma-y be obtained from minimum to truemaximum. In connection with the aforesaid features I employ an auxiliaryyielding valve or stopper in connection with the main ormanually-controlled valve or stopper arranged to yield to increasedpressure, and thus permit the flow of steam, even after the main valvehas been manually closed.

My present invention therefore consists in the features above outlined,as well as in certain minor features of construction, as hereinafterfully set forth.

In the drawings annexed, Figure 1 presents a central vertical section.of a valve embodying my invention, and Fig. 2 is a plan view thereof.Fig. 3 shows, respectively, an elevation and inverted plan of theadjustable sleeve which controls the internal way of the valve. Fig. 4is a vertical section similar to Fig. 1, showing a slightly-modifiedconstruction,omitting the yielding or relief valve; and Fig. 5 is a planview thereof, and Fig. 6gives views of the adjustable sleeve thereof.Fig. 7

gives a vertical section of another form of valve,

embodying the auxiliary or yielding stopper. Fig. 8 is a plan view ofthe same, and Fig. 9 a cross-section on line A B of Fig. 7. Fig. 10gives an elevation and crosssection of the main stopper of the valveremoved, and Fig. 11 similar views of the tubular seat or throat inwhich the stopper moves. Fig. 12 gives a half-elevation and half-sectionof a valve on the same principle as that in Figs. 1 and 4, but ofsimpler structure, omitting the yielding valve; and Fig. 13 is a plan ofthis valve. Figs. 14 and 15 give, respectively, a vertical sectionalelevation and plan ofa still simpler form of valve on the sameprinciple, dispensing with the adjustable sleeve and yielding stopper.

Referring to Fig. 1, a indicates the body or casing of the valve, havingthe inlet-orifice b and the outlet-orifice c, to which the pipes connectin the usual manner, as shown. These orifices are shown as at rightangles to each other, the valve being thus what is known as anangle-valve, but it will be readily understood that the orifices may bein line with or parallel to each other, projecting from opposite sidesof the casing, when desired, as in what is known as globe-valves.

\Vithin the casing a, around t-heinlet-orifice, a short neck or rim, (1,rises, the top edge of which is ground true and preferably flat, and

forms the valve-seat for the valve-disk or stopper 0, whose face isground to fit steam-tightthereon, as shown.

fff indicate the removable top or cap of the valve-casing, having abroad-shouldered rim, f, atthe middle, with an underlying threaded neckwhich screws into the top of the casing a, thus bringing the shoulder ofthe rim down steam-tight on the top edge of the casing, as shown inFig. 1. The rim f is preferably of circular form and overhangs the bodyof the valve, as shown in Figs. 1 and 2, and its upper surface forms adial or index plate, as shown in Fig. 2, and hereinafter de scribed,while above the said rim the cap is formed with the usual guiding neckand gland,

2 f, through which the valve-stem projects full or maximum flow of steamallowed.

steam-tight, while below the rim the cap is formed with the threadedsleeve or neck f which projects down into the cavity of the easing inline .with the seat-rim d.

Now, the valve-disk or stopper is made in two parts, 0 e, screwedtogether as shown, the upper part, 6, being in the form of a shouldercdthimble,which screusonto the disk 6, leaving a space or play between thetwo. The valve-stem is also made in two parts, 9 y, the upper part, 9,being solid and projecting through the neck and gland of the cap, whilethe lower part, g, is tubular and screws at the top onto a threadedtenon on the lower end of the part 9, while the lower end of the tube 9fits into the thimble e, and has a shoulder to engage with the shoulderof the thimble, and is thus capable of a slight play between the thimbleand the top of the disk 6. Now, the solid part 9 of the stem is threadednear the base, and screws into a threaded part of the neck f, so that ifthe stem be rotated in one way or the other it will be screwed up ordown, and the valve-disk 6 thus raised from or lowered to its seat. Theprojecting end of the stem is therefore provided with an operatinglever,arm,or crank, h, having at the manipulating end theupwardly-projecting crank-knobh and the downwardly-projecting indexpoint or finger h, which approaches the surface of the dial-rim f, andthus sweeps over its circumference when the arm is revolved to turn thevalve-stem, as will be understood. In the path of the finger h however,astop or projection, j, rises from the rim f, which stop forms a limitto the movement of the finger and the rotation of the operating arm andstem, and this stop represents the limit of opening of the valve, forwhen the finger h contacts with said stop the valve-disk will be raisedfrom its seat to its full extent and the as seen in Fig. 2, the disk 9will be brought to its seat. as seen in Fig. 1, and-the flow entirelyshut off, so that the point marked closed on the dial-rim f is the zeroof the scale through which the arm is movable, the stop J forming themaximum limit,whiie the space between is graduated, as shown, intodivisions of 3-, 5, 2', 850., as may be desired, so that when the arm isrevolved to any of the graduations a correspondingly reduced orincreased flow of steam will be obtained.

It may now be noted that when the disk 6 is brought to its seat, as inFig. 1, there yet exists a play between the top of the disk and theshoulder of the stem g, and hence the steanrpressure under the diskwould consequently tend to lift it and allow the steam to escape. This,however, is prevented by a spring, is, arranged within the tubular stem9. pressing at its lower end on the disk and abutting at its upper endagainst an adjustable screw-plug, is, so as to tend to constantly keepthe disk down with a force sufficientto amply overcome the normalsteam-pressure, which force can be adjusted by screwing the plug k u por down, as will be understood; hence when the disk is forced to itsseat by manually revolving the operating arm of the valve to theposition of closed, no steam can pass the valve while at its normalpressure. If, however, the engineer desires to force a circulation ofsteam through the valves at night, or during Sundays or holidays, whenthe tenants are absent, he simply will allow the steampressure to risein the boiler beyond the normal point, and this increased pressure willthen lift the springdepressed disks 6, and thus permit a flow of steamto pass into the radiators; and when the pressure is again allowed tofall to or below the normal the valves will automatically seat in theirclosed positions, as before. By this means the engineer is enabled toforce suflicient steam through the heating apparatus to prevent thetemperature from falling .too low throughout the building and withoutthe trouble of going to the valves to open them, and notwithstanding thefact that they had been left closed to the normal pressure. If, however,the occupant of any apartment does not desire to have the steam thusturned on, as above described,during his absence, he may readily lockthe valve against the possibility of such opening, to do which it isonly neces sary to rotate the operating-handle one-half revolutionfurther in its direction of closure, or from the mark Closed in Fig. 2to or near to the back side of the stop j, marked Locked,when thismovement will screw the shouldered end of the stem 9 down tightly ontothedisk 6, (against the stress of the spring 1a,) thus positivelypreventing the rise of the disk 6, even though the steam-pressure beindefinitely increased.

It may now be seen that the construction described provides a 'valvewhich, after it has been closed by the tenant, will still yield to thewill of the engineer through an increased pressure of steam,and enablehim to open the valves and permit a flow of steam under certainnecessary circumstances, and which, on the other hand, can be locked bythe tenant against so yielding, when desired, which features are shownin my former patent.

In addition to these points the valve or stopper also has a graduatedrange of movement,with a definite stop for the maximum ofopening,whereby the valve may be set to allow different graduated flowsof steam, according to the quantity of heat required. This lastprovision, however, would be ineffective without some means ofgraduating or adjusting the area of the actual internal way or passageof the valve itself and proportioning it properly to the area orcapacity of the radiator or other chamber to which the valve deliversits steam, so that when the stopper was fully opened, with the handlesset to the maximum point or stop,no more steam could pass than could beproperly condensed in the radiator without leaving any appreciablepressure from excess therein, this being one ofthe prime objects of mypresent improvement, according to the principle set forth in my pendingapplication before referred to. Now, this adjustment of the area of theinternal way may be accomplished in various obviousways; but in thepresent instance,

' referring to Fig. 1, I prefer to effect it by means of the adjustablesleeve m, which occupies the cavity of the casing between the valvescatand inlet-orifice, and thus controls the way of the valve. The lower endof this sleeve fits around the seat-rim (l, the meeting surfaces ofwhich are turned to a nice fit, while the upper end of the sleeve screwsonto the threaded neck f of the casing-cap, as fully shown in Fig. 1.This sleeve is shown removed in Fig. 3, from which, in connection withFig. 1. it will be seen that its lower end is perforated or notched,preferably with V- shaped notches, and this notched edge fits around theseat-rim d, so that, hence, if the sleeve be rotated in one way or theother it will be screwed up or down on the neck f and the notched loweredge thus raised more or less above the seat edge of the rim (2,therebyaffording a passage for the steam of greater or less area,according to the extent to which the notches are adjusted above the edgeof the valve-seat (Z, and thereby adjusting the area of the internal wayof the valve in a simple and effective manner.

In order to facilitate the rotation and ad j ustment of the sleeve m, itis formed with circumferential corrugations or teeth, as seen in Fig. 3,and its adjustment within the valvecasing is readily effected byremoving the screw-plug a on the side of the casing and inserting atool,whereby the toothed circumfermice of the sleeve may be engaged andturned to the desired extent, and when the screwplug a is replaced itsextremity will bear upon the sleeve, as shown in Fig. 1, and thus fastenit at the desired adjustment.

Hence by this simple means it will be seen that the way of the valve maybe so adjusted to the condensing capacity or heating-surface of theradiator that, with steam at a certain pressure and the weather at acertain aver age condition, only such a quantity of steam can pass atthe maximum-that is, when the val ve-stopper is fully openedas can befully condensed in the radiator without leaving any appreciable pressureor excess therein which would interfere with easy regulation and thecirculation in the heating system; hence when the valve-stopper is fullyopened, withthe handle turned around to the stopj' the full heatingeffect will be obtained, and when it is turned away from the stop towardthe zero of the scale the flow will be more and more reduced, and theheat given out in the radiator correspondingly regulated or graduated,according to the indicated position of the valve on the dialf', therebyaccomplishing a mostdesirable result in steam-heating.

The valve shown in Figs. 4 and 5 is slightly different in structure fromFig. 1that is, in this modification the yielding valve or stopper isomitted, and the valve-stem g is in one solid piece with the valve-diskc and solid on the end thereof. The gland-neck f is also separate fromthe dial-riinfgand has a ground shoulder on the lower end to seat on theground upper edge of the casing a; as shown in Fig. 1, and also carriesthe threaded neck f onto which the adjustable sleeve m is screwed. Thissleeve is formed with key-like cars m on each side, which fit in groovesin. the sides of the casing a, as shown fully in Fig. 6, thus preventingthe sleeve from turning, but permitting it to be adjusted vertically upor down. The dial-rim f serves as a capnnt over the casing and thegland-neck, and screws down onto the casing, as shown, with a shoulderwhich bears on the shoulder of the gland-neck f, so as to hold said neckfirmly in place and prevent leakage at the joint between the same andthe casing. It will therefore be now readily seen that the sleeve in inthis case may be readily adjusted by first turning the rim f slightly,so as toreleasethe gland-neck, and then by seizing and turning thegland-neck the sleeve on may be screwed up or down to the desiredextent, and thus adjusted with the effect before described, after whichthe rim f may be again screwed down tight, and will hold the parts atthe desired adjustment.

As the yielding valve and themcans for locking the same are in thisinstance omitted, the operating-arm of the valve moves between twostops,jj, onthe dial-rim, as shown in Fig. 5, which stops respectivelyrepresent the positions of fully opened and fully closed, as will bereadily understood.

The valve shown in Fig. 7 embodies the same principle already set forth,but differs more in structure from Fig. 1 than does the formermodification. In this form the casing a is open at top and bottom, andthe dial-rim f is formed solid on the top thereof, while thegland-neckfscrews into the top in the manner of ordinary valves. Theseat-rim d is in the form of a perforated nozzle, and screws into thelower end of the casing and projects up within the same, as shown, andwithin this nozzle is fitted the valve-stopper c, which is in the formof a perforated sleeve having perforations matching those of theseat-nozzle d,

, these parts being shown detached in elevation and section in Figs. 10and 11. The valvestem 9 is free to turn 'in the glandf, but preventedfromvertical motion bya pin, 9 which engages a groove in the stem, andon the lower end of the stem is formed a steeply-threaded screw-hub, 9which engages witha nut-like sleeve, 0, which is attached to the stopper6. The nut-like sleeve 0 has keys or wings 0, which are engaged ingrooves on a surrounding rotary or adjustable ring, 1), which is socketed in the top of the casing a, and free to revolve therein, beingheld, however, by the serew-plng n, as shown well in Figs. 7 and 9, inthe same manner as the adjustable sleeve in in the former cases.

N ow, the seat-nozzle d has two perforations, 3 3, at opposite sides,preferably about onequarter of an inch square, and the stopper 0 hassimilar perforations, 4. 4, and it will therefore be seen that when thestopper is moved so that the perforations thereof are coincident withthe perforations of the nozzle the flow of steam will be allowed, andwhen they are moved entirely out of coincidence the flow will be shutoff; hence the opening and closing movements of the valve are effectedby rotating the handle as before, which will, however, through theengagement of the rotary screw with the non-rotary nut 0, raise ordepress the perforated stopper 0 in the perforated nozzle cl. and thusbring the perforations into or out of register with each other by astraight, vertical, or longitudinal movement, as will be readilycomprehended. Now, the adjustment of-the effective area of the way ofthe valve is accomplished by a rotary movement of the nut and stopper 06, so as to bring the perforations of the nozzle and stopper more orless out of register with each other in a circumferential direction, andthus reduce the effective area of the perforations in the nozzle, andconse quently the flow of steam which can take place through the same.This adjustment is effected by removing the screw-plug n and rotatingthe ring 1), which will rotate the nut 0 and stopper 0, and thus effectthe desired adjustment, as will be readily seen, after which the plug isreplaced to retain the parts at the desired adjustment. To facilitatethe turning of the ring 1), a number of holes may be made around it, asshown in dotted lines in 3 Fig. 9.

Now, this form of my invention also embodies the yielding valve orstopper, as does Fig. 1, but in a somewhat different formthat is, theyielding valve 9 in this case rests on a seat in the upper part of thetubular stopper 6 and constantly tends to remain on its seat by thespring k, which encircles the stern of the valve with one end bearing ona crossbar or bridge across the stopper, and the other end resting on anadjustable nut on the end of the stem. The stopper e is perforated with,say, four slots, 0, just above the seat of the valve q, and in the topof the nozzle d are coincident slots, 0', as shown in section andelevation in Figs. 10and 11. The slots 0' in the nozzle, it will beseen, are much wider circumferentiallythan those in the stopper, toallow for the circumferential adjustment of the stopper'in the nozzle,as before described, so that the perforations r in the stopper willalways remain open to their full extent, notwithstanding the rotaryadjustment of the stopper to adjust the main way of the valve throughthe main perforations 3 3. Now, by referring to Fig. 7, it will beunderstood that when the stopper 6 is fully depressed to openthe mainway the small perforations r and r will become shut by the solid part ofthe stopper e and the nozzle d covering the respective perforations; butwhen the stopper is raised to shut the main way 3 3, as shown in Fig. 7,then the perforations will be opened by coincidence with each other;hence if the steam-pressure be now raised beyond the normal point, theyielding valve q will lift against the stress of the spring k and allowthe steam to escape through the perfo' rations r r, and thus flow to theradiators, thereby accomplishing the same purpose described inconnection with Fig. 1.

In this modification I show the operatinghandle of thevalve as in theform of a bent lever with a short index-finger, If, and anoperating-knob, h, projecting radially. It will also be seen, byreferring to Fig. 8, that the handle has a similar movement to thatdescribed in Fig. 1 for opening and closing the valve and looking itagainst the yielding flow above describedthat is, when the handle ismoved around to the open side of the stop j the valve will be opened toits maximum, and when moved around to the position Closed, the mainvalve or way will be entirely closed, but the auxiliary perforations r Twill be brought into coincidence, as in Fig. 7, and therefore in aposition to allow a flow of steam in case the pressure is increased tolift the yielding valve g. If, however, the handle be moved beyond thepoint Closed up to the opposite side of the stop j, marked Locked,thenthe perforations 1- will be raised up above the perforations r, andthis flow prevented, even though the steam-pressure be increased, thuslocking the valve, as before described.

In the form of valve in which the yielding stopper is omittedsuch asshown in Fig. 4-

I find the stuffing box or gland around the stem 1s actuallyunnecessary, andfmay be omitted, for it will be seen that since the mainfeature of this valve causes the flow of steam to be so graduated to theradiators as to sup ply it with only what it will condense and no more,hence there will be no appreciable pressure of steam within the casingof the valve above the seat, and therefore no tendency to cause leakagearound the stem, except of course, in cases where the valve may beplaced in a recumbent or inverted position, in which case condensationmight trickle out; but when placed in an erect position, as shown,noleak age will occur, thus enabling stuffing-boxes to be dispensedwith, and therefore greatly conducing to simplicity in the constructionand operation of the valves. In Figs. 12 and 13 I have therefore shownthe formin which I prefer to make the valve when the yielding stopper isomitted and the stuffing-box dispensed with. In this case the adjustablesleeve on also forms the guiding or gland neck of the valve-stem, andprojects up out of the casing around the stem, but without anystuffing-box. The exterior of this sleeve is, however, provided with afine screw-thread, as illustrated, which screws into the neck of thecasing a, and the stem 9 is also provided with a similar finescrew-thread which screws into the interior of the sleeve, all the saidthreads be ing ot'fexactly the same pitchpreferably thirty-two to theinch. The lower edge of the sleeve m is of course notched, as beforedescribed, and fits around the seat-rim din the same manner as in Figs.1 and 4. On the projecting end of the sleeve is screwed a jamnut, s,which is screwed down upon the top of the casing a,to hold the sleeve min what ever position it may be set. The handle, stops, and graduationsof the valve are the same as already described in connection with Figs.4 and 5; but it will be seen that the (lial-rimf is cast integral withthe casing a, and that it is preferably formed with an annular groove onthe top, in which is inserted an engraved or enamelled dial plate orring, t, as shown in Figs. 12 and 13.

It will now be seen, referring to Fig. 12, that the adjustment of theway in this valve is readily effected by first turning the stem of thevalve so as to raise the valvedisk c to the maximum or more than themaximum distance off the seat, after which the jam-nut 8 may be1oosened,and the sleeve m then turned or screwed up to the desiredextent until a sufficient portion of the notches in the lower end of thesleeve is brought above the valveseat to allow a sufficient flow ofsteam to equal the condensing capacity of the radiator, or nearly so, aswill be understood, after which the jam-nut is tightened to hold thesleeve at said adjustment.

It will be noted that the sleeve has a hexagonal head at the upperend,by which it may be readily turned by the fingers or bya wrench,

and it will be also seen that as the screw threads between the casingand the sleeve are I of the same pitch as the screw-threads between thesleeve and the valve-stem, hence the described adjustment of the sleevemay be made without displacing the valve-stem and its disk from anyposition in which it may have been left and without altering therelations of the parts with each other.

In Figs. 14 and 15 I show a still further modification of myinvention,which is stillfurther simplified in that it omits the yieldingstopper and also the adjustable-sleeve, the

way in this case being adjusted by the greater or less distance whichthe valve-disk is raised from its seat when the operating-hantile ismoved around to the stop for the limit of opening, which stop'is in thiscase made adj ustable to allow for the adjustment of the way in the saidmanner. In this valve, as seenin Fig. 14, the dial-rim f and seat-rim dare made integral with the casing a, as in Fig. 12. The valve-disk e isalso solid on the stem and seats solidly on the seat-rim d, and abovethe valve-disk the stem is formed with a threaded hub, u, havingpreferably a fine thread, the same as in Fig. 12, which screws into thethreaded interior of the casing to. The top of the stem projects throughthe guiding or gland neck f, which may or may notrhave a stuffing-box,but which screws into the top of the casing, as shown, and between theshoulder at the base of the said neck f and the top edge of the casingis interposed and clamped a ring, 1;, having a radial arm, j, whichprojects-out over the dial-rim in the pathof the indexfinger h and thisarm forms the stop which limits the maximum opening of the valve, beingmarked Open, as shown,while the mark Shut is on a fixed definite pointof the dial-rim, as shown. The adjustment of the way in this case istherefore effected by loosening the neck f, and thereby loosening thering I), with its stop j, and leaving it free to yield to the advance ofthe operating-handle and its index-finger. The handle of the valve 'maynow be gradually revolved, so as to gradually raise the valve off itssea-t until the. proper position is found which admits the true maximumflow to the radiator, when the stop 9' is moved up in contact with theindex fingenand the neck f screwed down.thus holding the stop at saidposition, and therefore fixing the limit for the maximum opening of thevalve thereafter. It will he therefore seen that when the handle ismoved to anyintermediate position between Shut and Open the flow will bereduced in proportion to the approach to the minimum or shut end of thescale, thus obtaining the desired graduation or fractional supply orregulation ofthe steam, as before described, which forms thecharacteristic advantage of my invention. It will be easily understoodthat the valve- 13o disk in Fig. 14 may be made to yield on the stem inthe same manner as in Fig. 1, so as to fractional valve, as it enables afractional control or graduation of steam-heat in radiators, which hasheretofore been as impracticable as it has been desirable. Besides thisprimary advantage, the new valve or the system of which the valve is apart secures better circulation, with unobstructed escape of water ofcondensation, and consequent nonliability of freezing in the radiator.In addition to this, the fractional valve enables the entire heatingapparatus to be greatly simplified, as it takes the place of threecommon valves to one radiator-viz., the supply, return, and air valves;also, the air-valve drip pipe requires no stuffing'box and has but onemoving part, so that, hence, the system of the new valve is not onlymuch more advantageous, but much simpler than the old system.

Having now described the principal and elements of my invention and someof the va rious forms in which it may be embodied, what I claim as myinvention is as follows:

1. A regulable valve for governing the sup ply of steam or other fluidscombining the following elements: means for adjusting the effective areaof the way or passage with a movable valve or stopper for opening orclosing said way and astop to limit the movement of said stopper andrepresenting the maximum movement thereof, substantially as and for thepurpose set forth.

2. A regulable valve for steam heaters or their equivalents, constructedwith means for adjusting the effective area of the internal way orpassage, in combination with a movable valve or stopper controlling saidway, an external operating-handle and index-point, and a graduated scaleor dial over which the same is movable, as and for the purpose setforth.

3. A regulable valve for steam heaters or equivalent purposes combiningthe following features: means for adjusting the effective area of theinternal way or passage, a movable valve or stopper controlling saidpassage, and an external operating-handle with an index point or finger,a scale or dial over which said handle or index is movable, and a stopor steps limiting the movement of said handle, substantially as and forthe purpose set forth.

4. In a regulatingvalve, the combination with an adjustable way, of amovable stopper controlling the same and a yielding stopper adapted toyield and open to increased pressure with means for locking the sameagainst so opening, an external operating-handle, and a graduated scaleover which the same is movable provided with graduations representingthe open, closed, and locked positions of the said valve, substantiallyas and for the purpose set'forth.

The combination, in a regulating-valve, with a valve-seat in theinternal way and a movable disk operating in relation therewith to openand close the way, of a notched or perforated sleeve, such as m, fittingaround the valve or seat and adjustable thereon, for regulating theeffective area of the way, substantially as set forth.

6. The combination, in a valve,with a valveseat in the internal way anda valve-disk operating in relation therewith, of anadjustablescrew-sleeve, such as m, having a notched 0r perforated edgefitting around the valve and seat and having a screw-engagement upon asustaining part of the valve with a clamping device to hold said sleeveat the desired adjustment, substantially as set forth.

7. The combination, with a valve casing having the seat 01, of thevalve-disk e, the adjustable notched screw-sleeve m, fitting around thevalve and seat, screwing into the casing, and projecting therefrom formanipulation or adjustment, with the valve stem 9, screwing into thesaid sleeve, and means for turning the said stem and for clamping thesaid sleeve at desired adjustments, substantially as set forth.

8. A regulable valve combining the following features: a movable stopperfor controlling the way with a yielding valve adapted to yield and opento an increased pressure, with means for locking the same against soopening when desired, substantially as set forth.

FREDERIO TUDOR.

\Vitnesses:

JNO. E. GAVIN, Cults. M. l-IIooINs.

